hi I'm new to the site and not sure even if this is in the right section. I was wondering about tuning options for the y32se.  What cams works well? If you put in 4 g cams into the 3ltr it has good results does this theroy also apply for the 3.2?  Also within the next couple of months a local guy is making me up equal lenght stainless manifolds and downpipes. Will also be using iridium plugs, magnacor leads, k&n panel filter. 

Any advice welcome thanks

Also, spark plugs will make no difference to power output and iridium plugs are really only worthwhile on engines that are very hard on their plugs (very high compression / forced induction).

I would save your money and use the standard GM plugs at a couple of quid each.

The GM panel filter isn't really restrictive (as long as you buy genuine - some pattern ones have much less surface area) and the danger with the K&N type is that they must be oiled to give decent filter performance. With the MAF located close to the filter on this setup, contamination of the MAF is a danger.

The 3.0 V6 could be livened up a little by chipping but the 3.2 has a flash based ECU so a chip swap is not possible. Remaps are available but expensive and there doesn't appear to be much experience of them here.

Ditto with cams, really. Can't recall anyone using uprated cams on a 3.2.

I think tubular exhaust manifolds would be an interesting mod to try, however.

Kevin

conalnugent wrote on 25. May 2011 at 19:01:


Drive By Wire ie no throttle cable

You might very well be using super duper HT leads on your 2.5, go outside & have a look under the bonnet of your 3.2 & see if you could fit them to that instead!  As said your 3.2 doesn't have HT leads 

omegas are heavy cars.. and your 3.2 have already   enough power.. imo a power gain of 20-30 hp in addition wont give impressive results on the clock,  so not worth that effort..  if you want something really faster, you need deep pockets and a different engine..

Start with a dam good service, make sure it's running correctly, get it on tech 2 via a member here to confirm multi rams are working, fuel trims are ok, no sensor issues etc etc....

And as said there not a great deal to come from the lump. Lower geared diff. Or another lump altogether.

320704460753 is the item number just found them with a quick look , better than binning your own cats and being in trouble for mot time no bids on em yet either

If the covers are tightened to 8nm they dont warp, and if the breathers are kept clean they dont leak.

its simple as this lads ye can do it the right way by cleaning your breathers torqing your bolts to 8 nm genuine gaskets etc etc and hope it dosent leak ...,.which it will sooner before later as it is a well known fault that they are rubbish, or you can slap on alloy covers like i did on my last two omegas with non genuine gaskets tightned by hand and never again get a leak its up to ye ,
also if this chap was looking for a smooth ride with an even curve bla bla bla he wouldnt be planning on modifying it
bin your dual ram put in a home made resonator box , job done .... may not be smooth but will be a damn lot more responsive for real time driving not plomasing on the motor way ,, tha is my opinion which i can tell you i experienced on MY car before and after and is not your usual hear say rubbish some people on here keep at , keep us updated with your findings ,
its refreshing to see an omega being modified on here , beats the usual topics about maintanence

paulgsi wrote on 28. May 2011 at 21:29:


Alot of miss informed info there, sorry. I'm sure the op will take whatever advice he chooses on what he does with his own car. But remember leaking cam covers are not confined to the omega. Numerous other marques fill thier plug wells with oil and cook the ignition system. The gaskets simply go hard with age and fail. The youngest omega will now be getting on for 8 years old, so until another set up has done similar comparable service life how can it be recommended? Plus the usual breather servicing is important true enough, again not an omega specific issue.  How on earth anyone managed to warp a cam cover given the internal webbing and structure... Seems odd to me, how can they warp?

Many a claim has been made on improving the induction system on here, yet to be proved beyond the classic "more noise equals more speed" . Of course if noise is what's wanted and a peaky uneven power delivery is what's considered an improvement then fine, go for it.

But if a simple biscuit tin plumbed into the inlet was worth while I'm sure vx would have included it, no? Any engine will be affected by emission constraints though so I'd start there, but de catting completely is advice that may not be appreciated come Mot time.

Also the oil filler is far less conveniently placed under the fuel lines on omega.

i260 wrote on 29. May 2011 at 12:01:


how much difference will make 20 hp on a 210 hp 1700 kg car on the clock ?   

you loose some of it on drive train, tires and pressure plate.. let me answer 0.2 - 0.3 at best.. noticeable.. may be .. but the cars that let you in dust , will still 

better invest for better tires and smaller gear ratios..